Improved sewing-clamps



NTTED STATES PATENT OFFICE.

JOHN H. PITEZEL, OF THREE RIVERS, MICHIGAN.

IMPROVED SEWING-CLAMPS.

Speciication forming part of Letters Patent No. 59,448, dated November 6, 1866.

To all whom 'it may concern:

Be `it known thatI, JOHN H. PITEZEL, of Three Rivers, iu the county of St. Joseph and State of Michigan', have invented a new and useful Improvement in Sewing-Clamps for Stitching Leather and other Materials, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in which- Figure 1 represents a view, in perspective, of my improved stitching-clamp and Fig. 2, a vertical transverse section through the jaws of the same.

It is the object of my invention to produce a cheap, simple, and eftlcient clamp which can readily be attached to any bench, table, or stand; and to these ends the improvement herein claimed consists in combining, with a detachable stand, a clamp composed of a short xed leg or jaw and a long movable leg or jaw, operated by a strap and treadle, to clamp the article to be held, with a spring interposed between the legs to open them when the pressure is released.

In the accompanying drawings myimproved clamp is shown as applied to a stitchinghorse, such as ordinarily used by saddlers and harness-makersl A base or bed plate, A A', of cast-iron, is formed with two branches or arms-one, A, passing above, the other, A', below, the stool or table, to give a firm support. A ledge,-

flange, or socket, B, is formed upon the base A, with a central rib, b, upon it. A curved clamp or leg, C, of wood, is mortised to it this socket and rib, and is rmly held by a screw-bolt, c, passing through the leg and rib.

A similar jaw or leg, D, is, in like manner, secured to a socket, E, pivoted to play vertically in planes parallel to the Xed clamp G. This socket plays on a fulcrum, e, in the base A, and passes down through a slot in it, terminating in a leg, F, to which one end of a strap, G, is attached. This strap passes over a pulley, H, mounted on a leg, I, projecting below the bed-plate, and is attached to a treadle, J, one end of which is pivoted to a cross-bar, K, while the other is free to play up or down, buj'J can be held in any desired position byaratchet,

L, on the frame. The jaws are closed by pressing on the treadle. To open them automatically I interpose a rubber spring, M betweenv the fixed and movable jaws.

The bed-plate is firmly secured to the table by a through-bolt, N, and by screws n.

In operation, the article to be stitched is to be placed within the jaws C D, and clamped by pressing with the foot upon the treadle, which is held by catching in the ratchet. To release the clamp the treadle is detached from the rack, when the spring instantly opens the jaws and releases the work.`

My invention is applicable to the .use of saddlers, harness-makers, coach trimmers, trunk-makers, and others.

I have shown my clamp as applied to a saddlers stool 5 but it is equally adaptable to a work-bench or table.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The bed-plate A A', constructed as described.

2. The vcombination of the cast-iron bed.-

plate and legs with the wooden clampingjaws, constructed and operating substantially as described.

3. The combination, with the bed-plate, of

scribed my name.

JNO. H. PITEZEL. Witnesses:

E. H. LoTHRoP, STEPHEN Z. HoAGr. 

